html, body, #app {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

.com-page, 
.com-container, 
.com-echart {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

// 给canvas元素设置圆角
canvas {
    border-radius: 20px;
}

.com-container{
    position: relative;
}